Influence of cultivated landscape composition on variety resistance: an assessment based on wheat leaf rust epidemics.
Identifieur interne : 000C94 ( Main/Exploration ); précédent : 000C93; suivant : 000C95Influence of cultivated landscape composition on variety resistance: an assessment based on wheat leaf rust epidemics.
Auteurs : Julien Papaïx [France] ; Henriette Goyeau ; Philippe Du Cheyron ; Hervé Monod ; Christian LannouSource :
- The New phytologist [ 1469-8137 ] ; 2011.
Descripteurs français
- KwdFr :
- Agriculture (méthodes), Basidiomycota (isolement et purification), Basidiomycota (pathogénicité), Feuilles de plante (microbiologie), France (MeSH), Gènes de plante (MeSH), Interactions hôte-pathogène (MeSH), Maladies des plantes (immunologie), Maladies des plantes (microbiologie), Modèles statistiques (MeSH), Produits agricoles (génétique), Produits agricoles (immunologie), Produits agricoles (microbiologie), Résistance à la maladie (MeSH), Théorème de Bayes (MeSH), Triticum (génétique), Triticum (immunologie), Triticum (microbiologie), Virulence (MeSH).
- MESH :
- génétique : Produits agricoles, Triticum.
- immunologie : Maladies des plantes, Produits agricoles, Triticum.
- isolement et purification : Basidiomycota.
- microbiologie : Feuilles de plante, Maladies des plantes, Produits agricoles, Triticum.
- méthodes : Agriculture.
- pathogénicité : Basidiomycota.
- France, Gènes de plante, Interactions hôte-pathogène, Modèles statistiques, Résistance à la maladie, Théorème de Bayes, Virulence.
- Wicri :
- geographic : France.
English descriptors
- KwdEn :
- Agriculture (methods), Basidiomycota (isolation & purification), Basidiomycota (pathogenicity), Bayes Theorem (MeSH), Crops, Agricultural (genetics), Crops, Agricultural (immunology), Crops, Agricultural (microbiology), Disease Resistance (MeSH), France (MeSH), Genes, Plant (MeSH), Host-Pathogen Interactions (MeSH), Models, Statistical (MeSH), Plant Diseases (immunology), Plant Diseases (microbiology), Plant Leaves (microbiology), Triticum (genetics), Triticum (immunology), Triticum (microbiology), Virulence (MeSH).
- MESH :
- geographic : France.
- genetics : Crops, Agricultural, Triticum.
- immunology : Crops, Agricultural, Plant Diseases, Triticum.
- isolation & purification : Basidiomycota.
- methods : Agriculture.
- microbiology : Crops, Agricultural, Plant Diseases, Plant Leaves, Triticum.
- pathogenicity : Basidiomycota.
- Bayes Theorem, Disease Resistance, Genes, Plant, Host-Pathogen Interactions, Models, Statistical, Virulence.
Abstract
In plant pathology, the idea of designing variety management strategies at the scale of cultivated landscapes is gaining more and more attention. This requires the identification of effects that take place at large scales on host and pathogen populations. Here, we show how the landscape varietal composition influences the resistance level (as measured in the field) of the most grown wheat varieties by altering the structure of the pathogen populations. For this purpose, we jointly analysed three large datasets describing the wheat leaf rust pathosystem (Puccinia triticina/Triticum aestivum) at the country scale of France with a Bayesian hierarchical model. We showed that among all compatible pathotypes, some were preferentially associated with a variety, that the pathotype frequencies on a variety were affected by the landscape varietal composition, and that the observed resistance level of a variety was linked to the frequency of the most aggressive pathotypes among all compatible pathotypes. This data exploration establishes a link between the observed resistance level of a variety and landscape composition at the national scale. It illustrates that the quantitative aspects of the host-pathogen relationship have to be considered in addition to the major resistance/virulence factors in landscape epidemiology approaches.
DOI: 10.1111/j.1469-8137.2011.03764.x
PubMed: 21585391
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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This requires the identification of effects that take place at large scales on host and pathogen populations. Here, we show how the landscape varietal composition influences the resistance level (as measured in the field) of the most grown wheat varieties by altering the structure of the pathogen populations. For this purpose, we jointly analysed three large datasets describing the wheat leaf rust pathosystem (Puccinia triticina/Triticum aestivum) at the country scale of France with a Bayesian hierarchical model. We showed that among all compatible pathotypes, some were preferentially associated with a variety, that the pathotype frequencies on a variety were affected by the landscape varietal composition, and that the observed resistance level of a variety was linked to the frequency of the most aggressive pathotypes among all compatible pathotypes. This data exploration establishes a link between the observed resistance level of a variety and landscape composition at the national scale. It illustrates that the quantitative aspects of the host-pathogen relationship have to be considered in addition to the major resistance/virulence factors in landscape epidemiology approaches.</AbstractText><CopyrightInformation>© 2011 The Authors. 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sortKey="Papaix, Julien" sort="Papaix, Julien" uniqKey="Papaix J" first="Julien" last="Papaïx">Julien Papaïx</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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